Answer
Start with a 90 degree angle in pencil. Cutting this angle in half with a bisector, you can make the red 45 degree angle. Then, adding a 15 degree slice to this angle, you can create the 105 degree angle.
Work Step by Step
In order to properly measure the first angle, it is necessary to use a protractor. You must first draw a straight line, and then you use the protractor to draw the second line with the correct angle.
